Stone's stones and the Cursus connection

I'm very confused about Stone's stones and the Cursus connection. I have been taking another look at this article:

“The petrography, affinity and provenance of lithics from the Cursus Field, Stonehenge”, by RA Ixer & RE Bevins, Wiltshire Archaeological & Natural History Magazine 103 (2010) 1–15

It was published seven years ago, and that's a long time in the great scheme of things relating to Stonehenge. But in it, the authors say that new analyses of rock samples from Stonehenge, the Stonehenge Cursus Field and Pembrokeshire have shown that some of the rhyolite and ash fragments on Salisbury Plain have probably come from innocuous locations between Preseli and the north Pembrokeshire coast, but that others are from unknown locations maybe outside Wales. So far so good.......

Then there is another article by Rob Ixer, :

Digging into Stonehenge’s past
Mineral Planning, issue 143 / October 2012, p 13
www.mineralPlanning.co.uk

In it, he says that the cause (of much new debate) "is a recent re-examination of the contents of a little box of stones collected by JF Stone in 1947 from plough soil close to the Stonehenge Greater Cursus and donated to the Salisbury and South Wiltshire Museum. Many of the ten or so stones – none of which are bigger than a fist – were found to be texturally and mineralogically distinctive.
Initial investigations showed none of these matched any of the standing bluestones......" But Ixer then went on to say that some of them matched the rhyolites from Craig Rhosyfelin, and continued:  "So the contents of a 60-year-old box led to the discovery of the first secure Stonehenge-related quarry site, confirming that man moved the bluestones. But the initial assessment of Stone’s stones was wrong, because in June 2012, one of the rocks was recognised as coming from bluestone SH48, making it only the fourth piece of debitage from thousands investigated that could be matched to a specific bluestone orthostat."

Let's forget the wild speculation about quarries and concentrate on the fragments. Presumably the rocks identified originally as "acid volcanics and tuffs" are now referred to as foliated rhyolites? Is there any spotted dolerite in the collection? And exactly how many different exotic rock types are there in the Stone collection and in other collections from more recent digs at Durrington Walls, Windmill Hill and the Cursus? Did Richard Atkinson really find a lump of spotted dolerite on Silbury Hill, and are there really at least 1300 "bluestone fragments" inside the hill itself?

In an article by Tim Darvill published in 2012, he says:

"A review of samples from the Altar Stone confirmed that it was a fine-to-medium
grained calcareous sandstone of the kind found in the Senni Beds of south Wales.
Four other pieces of sandstone from the Stonehenge Cursus, Stonehenge, Aubrey
Hole 1 and Aubrey Hole 5 share a common lithology as low-grade metasediments
and derive from a different source area, possibly from Lower Palaeozoic sandstone
beds (Ixer & Turner 2006).
"An examination of finds from the Cursus Field collected in 1947 and from
excavations by the SRP in 2006 and 2008 confirmed that much of the material could
be matched with samples from Stonehenge (identified as Groups A–D: Ixer & Bevins
2011a; 2011b) but that some rhyolites could not be matched amongst existing
samples (Ixer & Bevins 2010; Ixer et al. forthcoming)."

(Research activity in the Stonehenge Landscape 2005–2012 Timothy Darvill
Stonehenge and Avebury Revised Research Framework
6 July 2012)
In the recent Darvill / Wainwright chapter in the Pembrokeshire County History (Vol 1), they refer to "widely recognized" rhyolite fragments (some of unknown provenance) in the debitage from the 2008 Stonehenge dig, from the Heelstone area, from some Aubrey Holes, from the Avenue and the Cursus.........

I am rather confused by all of this, because Rob Ixer, in his review of my 2008 book called "The Bluestone Enigma", criticised me for the inaccuracy of my reporting on the finds associated with the Cursus. He said: "Almost every sentence about the Great Cursus and its associated lithics (pp 68, 69, 77, 103, 108) is incorrect -- once again these errors, missing from the original papers, are found on-line." He never did say what those errors were, and I still think that I was reporting accurately on those pages the situation as it was in 2008.

So is there abundant bluestone erratic material in the Stonehenge landscape, or is there not?